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Southern Company

Plant Yates Units 6 and 7

Project Summary

Project
Southern Company evaluated design options for making Plant Yates Units 6 and 7, located in Newnan, Georgia, more environmentally friendly and less costly to operate. Potential savings to customers were also considered. Engineers worked through conceptual designs for installing Novel Integrated Desulfurization (NID) technology vs. converting the units from coal-fired to natural gas. The goal for construction was to allow the plant units to remain in operation for the most optimal time period.

Solution
Using ProjectWise with Bentley’s integrated design tools enabled the engineers to compare multiple configurations throughout conceptual design, as well as simulate construction of modular unit upgrades. The ability to quickly and efficiently model structural design concepts and maintain analytical models within ProjectWise allowed engineers to evaluate the viability of structures through the pre-roll in and post-roll in design phases.

Outcome
With the option to review fully integrated 3D models, the project team evaluated multiple variations of the dry scrubber project, which was estimated to cost USD 600 million. Southern Company chose gas conversion, estimated at USD 40 million, as the best option for the plant and customer. The efficient design, construction, startup, operation, and maintenance of the Unit 6 and 7 improvements were ensured with the use of Bentley solutions throughout the lifecycle.